Koo

blue, boo, brew, chew, clew, clue, coo, coup, crew, cue, dew, do, doux, due, ewe, few, flu, flue, fou, glue, gnu, goo, hew, hue, Jew, lieu, loo, mew, moo, moue, mu, new, nu, ooh, pew, phew, pooh, q, queue, roux, rue, screw, shoe, shoo, shrew, Sioux, skew, slew, slough, slue, smew, sou, sous, spew, sprue, stew, strew, sue, Sue, thew, through, to, too, true, two, u, view, whew, who, woo, xu, yew, you, zoo